Influence of FGF23 and Klotho on male reproduction: Systemic vs direct effects
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Influence of FGF23 and Klotho on male reproduction : Systemic vs direct effects. / Bøllehuus Hansen, Lasse; Kaludjerovic, Jovana; Nielsen, John Erik; Rehfeld, Anders; Poulsen, Nadia Nicholine; Ide, Noriko; Skakkebaek, Niels Erik; Frederiksen, Hanne; Juul, Anders; Lanske, Beate; Jensen, Martin Blomberg.
In: F A S E B Journal, Vol. 34, No. 9, 2020, p. 12436-12449.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Influence of FGF23 and Klotho on male reproduction
T2 - Systemic vs direct effects
AU - Bøllehuus Hansen, Lasse
AU - Kaludjerovic, Jovana
AU - Nielsen, John Erik
AU - Rehfeld, Anders
AU - Poulsen, Nadia Nicholine
AU - Ide, Noriko
AU - Skakkebaek, Niels Erik
AU - Frederiksen, Hanne
AU - Juul, Anders
AU - Lanske, Beate
AU - Jensen, Martin Blomberg
N1 - © 2020 Federation of American Societies for Experimental Biology.
PY - 2020
Y1 - 2020
N2 - Currently, no treatment exists to improve semen quality in most infertile men. Here, we demonstrate systemic and direct effects of Fibroblast growth factor 23 (FGF23) and Klotho, which normally regulate vitamin D and mineral homeostasis, on testicular function. Direct effects are plausible because KLOTHO is expressed in both germ cells and spermatozoa and forms with FGFR1 a specific receptor for the bone-derived hormone FGF23. Treatment with FGF23 increased testicular weight in wild-type mice, while mice with global loss of either FGF23 or Klotho had low testicular weight, reduced sperm count, and sperm motility. Mice with germ cell-specific Klotho (gcKL) deficiency neither had a change in sperm count nor sperm motility. However, a tendency toward fewer pregnancies was detected, and significantly fewer Klotho heterozygous pups originated from gcKL knockdown mice than would be expected by mendelian inheritance. Moreover, gcKL mice had a molecular phenotype with higher testicular expression of Slc34a2 and Trpv5 than wild-type littermates, which suggests a regulatory role for testicular phosphate and calcium homeostasis. KLOTHO and FGFR1 were also expressed in human germ cells and spermatozoa, and FGF23 treatment augmented the calcium response to progesterone in human spermatozoa. Moreover, cross-sectional data revealed that infertile men with the highest serum Klotho levels had significantly higher serum Inhibin B and total sperm count than men with the lowest serum Klotho concentrations. In conclusion, this translational study suggests that FGF23 and Klotho influence gonadal function and testicular mineral ion homeostasis both directly and indirectly through systemic changes in vitamin D and mineral homeostasis.
AB - Currently, no treatment exists to improve semen quality in most infertile men. Here, we demonstrate systemic and direct effects of Fibroblast growth factor 23 (FGF23) and Klotho, which normally regulate vitamin D and mineral homeostasis, on testicular function. Direct effects are plausible because KLOTHO is expressed in both germ cells and spermatozoa and forms with FGFR1 a specific receptor for the bone-derived hormone FGF23. Treatment with FGF23 increased testicular weight in wild-type mice, while mice with global loss of either FGF23 or Klotho had low testicular weight, reduced sperm count, and sperm motility. Mice with germ cell-specific Klotho (gcKL) deficiency neither had a change in sperm count nor sperm motility. However, a tendency toward fewer pregnancies was detected, and significantly fewer Klotho heterozygous pups originated from gcKL knockdown mice than would be expected by mendelian inheritance. Moreover, gcKL mice had a molecular phenotype with higher testicular expression of Slc34a2 and Trpv5 than wild-type littermates, which suggests a regulatory role for testicular phosphate and calcium homeostasis. KLOTHO and FGFR1 were also expressed in human germ cells and spermatozoa, and FGF23 treatment augmented the calcium response to progesterone in human spermatozoa. Moreover, cross-sectional data revealed that infertile men with the highest serum Klotho levels had significantly higher serum Inhibin B and total sperm count than men with the lowest serum Klotho concentrations. In conclusion, this translational study suggests that FGF23 and Klotho influence gonadal function and testicular mineral ion homeostasis both directly and indirectly through systemic changes in vitamin D and mineral homeostasis.
U2 - 10.1096/fj.202000061RR
DO - 10.1096/fj.202000061RR
M3 - Journal article
C2 - 32729975
VL - 34
SP - 12436
EP - 12449
JO - F A S E B Journal
JF - F A S E B Journal
SN - 0892-6638
IS - 9
ER -
ID: 248760416